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H. Peter Anvin c41d68a513 compat: Make compat_alloc_user_space() incorporate the access_ok() ... compat_alloc_user_space() expects the caller to independently call access_ok() to verify the returned area. A missing call could introduce problems on some architectures. This patch incorporates the access_ok() check into compat_alloc_user_space() and also adds a sanity check on the length. The existing compat_alloc_user_space() implementations are renamed arch_compat_alloc_user_space() and are used as part of the implementation of the new global function. This patch assumes NULL will cause __get_user()/__put_user() to either fail or access userspace on all architectures. This should be followed by checking the return value of compat_access_user_space() for NULL in the callers, at which time the access_ok() in the callers can also be removed. Reported-by: Ben Hawkes <hawkes@sota.gen.nz> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Chris Metcalf <cmetcalf@tilera.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Ingo Molnar <mingo@elte.hu> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Tony Luck <tony.luck@intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: James Bottomley <jejb@parisc-linux.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: <stable@kernel.org>		15 years ago
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iseries	powerpc/iseries: Fix pci breakage due to bad dma_data initialization	16 years ago
8xx_immap.h	…
8253pit.h	time: move PIT_TICK_RATE to linux/timex.h	16 years ago
Kbuild	archs: replace unifdef-y with header-y	15 years ago
abs_addr.h	Merge commit 'gcl/next' into next	15 years ago
agp.h	agp: kill phys_to_gart() and gart_to_phys()	16 years ago
asm-compat.h	powerpc: Emulate most Book I instructions in emulate_step()	15 years ago
asm-offsets.h	kbuild: move asm-offsets.h to include/generated	15 years ago
async_tx.h	ppc440spe-adma: adds updated ppc440spe adma driver	15 years ago
atomic.h	powerpc: Rename LWSYNC_ON_SMP to PPC_RELEASE_BARRIER, ISYNC_ON_SMP to PPC_ACQUIRE_BARRIER	15 years ago
auxvec.h	…
backlight.h	…
bitops.h	powerpc: Rename LWSYNC_ON_SMP to PPC_RELEASE_BARRIER, ISYNC_ON_SMP to PPC_ACQUIRE_BARRIER	15 years ago
bitsperlong.h	asm-generic: introduce asm/bitsperlong.h	16 years ago
bootx.h	powerpc: Fix warnings from make headers_check	16 years ago
btext.h	…
bug.h	panic: Allow warnings to set different taint flags	15 years ago
bugs.h	…
byteorder.h	byteorder: make swab.h include asm/swab.h like a regular header	16 years ago
cache.h	Merge branch 'for-35' of git://repo.or.cz/linux-kbuild	15 years ago
cacheflush.h	block: add helpers to run flush_dcache_page() against a bio and a request's pages	15 years ago
cell-pmu.h	powerpc/oprofile: IBM CELL: add SPU event profiling support	16 years ago
cell-regs.h	powerpc/cell: Move CBE_IOPTE_* to <asm/cell-regs.h>	16 years ago
checksum.h	…
clk_interface.h	…
code-patching.h	powerpc: Unify opcode definitions and support	16 years ago
compat.h	compat: Make compat_alloc_user_space() incorporate the access_ok()	15 years ago
cpm.h	powerpc/cpm: Reintroduce global spi_pram struct (fixes build issue)	15 years ago
cpm1.h	powerpc/cpm1: Mark micropatch code/data static and __init	15 years ago
cpm2.h	powerpc/cpm: Move CPMFCR_* defines into cpm.h	15 years ago
cputable.h	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	15 years ago
cputhreads.h	powerpc/mm: Add HW threads support to no_hash TLB management	16 years ago
cputime.h	powerpc: Replace per_cpu(, smp_processor_id()) with __get_cpu_var()	15 years ago
current.h	…
dbdma.h	…
dbell.h	powerpc/book3e: Resend doorbell exceptions to ourself	15 years ago
dcr-generic.h	…
dcr-mmio.h	…
dcr-native.h	powerpc/4xx: Extended DCR support v2	16 years ago
dcr-regs.h	ppc440spe-adma: adds updated ppc440spe adma driver	15 years ago
dcr.h	powerpc: Const-qualify Device Node Argument to DCR Resource Extent API	16 years ago
delay.h	powerpc: Fix spin_event_timeout() to be robust over context switches	16 years ago
device.h	arch/powerpc: Move dma_mask from of_device into pdev_archdata	15 years ago
disassemble.h	ppc: Create disassemble.h to extract instruction fields	16 years ago
div64.h	…
dma-mapping.h	dma-mapping: remove dma_is_consistent API	15 years ago
dma.h	…
edac.h	…
eeh.h	powerpc/pci: Split pcibios_fixup_bus() into bus setup and device setup	16 years ago
eeh_event.h	…
elf.h	powerpc: TIF_ABI_PENDING bit removal	15 years ago
emergency-restart.h	…
emulated_ops.h	powerpc: perf_event: Add alignment-faults and emulation-faults software events	15 years ago
errno.h	…
exception-64e.h	powerpc/book3e-64: Add helper function to setup IVORs	16 years ago
exception-64s.h	Make head_64.S aware of KVM real mode code	15 years ago
fb.h	…
fcntl.h	…
feature-fixups.h	powerpc: Fix lwsync feature fixup vs. modules on 64-bit	15 years ago
firmware.h	powerpc: Fix hypervisor TLB batching	16 years ago
fixmap.h	powerpc: reserve fixmap entries for early debug	15 years ago
floppy.h	…
fs_pd.h	…
fsl_gtm.h	…
fsl_lbc.h	powerpc/fsl: Increase the number of possible localbus banks	16 years ago
fsldma.h	arch/powerpc/include/asm/fsldma.h needs slab.h	15 years ago
ftrace.h	powerpc32, ftrace: save and restore mcount regs with macro	16 years ago
futex.h	powerpc: Rename LWSYNC_ON_SMP to PPC_RELEASE_BARRIER, ISYNC_ON_SMP to PPC_ACQUIRE_BARRIER	15 years ago
gpio.h	powerpc/gpio: support gpio_to_irq()	15 years ago
grackle.h	…
hardirq.h	powerpc: Convert global "BAD" interrupt to per cpu spurious	15 years ago
heathrow.h	…
highmem.h	kmap_atomic: make kunmap_atomic() harder to misuse	15 years ago
hugetlb.h	powerpc/mm: Bring hugepage PTE accessor functions back into sync with normal accessors	15 years ago
hvcall.h	powerpc/pseries: Migration code reorganization / hibernation prep	15 years ago
hvconsole.h	…
hvcserver.h	…
hw_breakpoint.h	powerpc, hw_breakpoint: Tell generic code we have no instruction breakpoints	15 years ago
hw_irq.h	powerpc/perf_event: Fix oops due to perf_event_do_pending call	15 years ago
hydra.h	…
i8259.h	…
ibmebus.h	…
ide.h	cleanup powerpc/include/asm/ide.h	17 years ago
immap_86xx.h	…
immap_cpm2.h	powerpc/qe&cpm2: Avoid redefinitions in CPM2 and QE headers	15 years ago
immap_qe.h	powerpc/qe&cpm2: Avoid redefinitions in CPM2 and QE headers	15 years ago
io-defs.h	…
io.h	powerpc: Wire up /proc/vmallocinfo to our ioremap()	16 years ago
ioctl.h	…
ioctls.h	tty: Add EXTPROC support for LINEMODE	15 years ago
iommu.h	powerpc: Change archdata dma_data to a union	16 years ago
ipcbuf.h	…
ipic.h	…
irq.h	Merge commit 'v2.6.35-rc6' into devicetree/next	15 years ago
irq_regs.h	…
irqflags.h	powerpc: Fix lockdep IRQ tracing bug	17 years ago
kdebug.h	…
kdump.h	powerpc: Move kdump default base address to 64MB on 64bit	15 years ago
kexec.h	powerpc/kexec: Fix boundary case for book-e kexec memory limits	15 years ago
keylargo.h	…
kgdb.h	…
kmap_types.h	kdb: core for kgdb back end (2 of 2)	15 years ago
kprobes.h	…
kvm.h	KVM: PPC: Allow userspace to unset the IRQ line	15 years ago
kvm_44x.h	KVM: ppc: move struct kvmppc_44x_tlbe into 44x-specific header	16 years ago
kvm_asm.h	KVM: PPC: Enable native paired singles	15 years ago
kvm_book3s.h	KVM: PPC: Make use of hash based Shadow MMU	15 years ago
kvm_book3s_32.h	KVM: PPC: Add kvm_book3s_32.h	15 years ago
kvm_book3s_64.h	KVM: PPC: Add kvm_book3s_64.h	15 years ago
kvm_book3s_asm.h	KVM: PPC: Use KVM_BOOK3S_HANDLER	15 years ago
kvm_booke.h	KVM: PPC: Improve indirect svcpu accessors	15 years ago
kvm_e500.h	KVM: PPC E500: fix tlbcfg emulation	15 years ago
kvm_fpu.h	KVM: PPC: elide struct thread_struct instances from stack	15 years ago
kvm_host.h	KVM: Remove unnecessary divide operations	15 years ago
kvm_para.h	…
kvm_ppc.h	KVM: PPC: Extract MMU init	15 years ago
libata-portmap.h	…
linkage.h	…
local.h	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	15 years ago
local64.h	arch: Implement local64_t	15 years ago
lppaca.h	powerpc/pseries: Add extended_cede_processor() helper function.	15 years ago
lv1call.h	…
machdep.h	powerpc/book3e: Add generic 64-bit idle powersave support	15 years ago
macio.h	of/device: Replace of_device with platform_device in includes and core code	15 years ago
mc146818rtc.h	…
mediabay.h	powerpc/macio: Rework hotplug media bay support	15 years ago
memblock.h	lmb: rename to memblock	15 years ago
mman.h	mm: add MAP_HUGETLB for mmaping pseudo-anonymous huge page regions	16 years ago
mmu-8xx.h	powerpc: Add TLB management code for 64-bit Book3E	16 years ago
mmu-40x.h	powerpc: Add TLB management code for 64-bit Book3E	16 years ago
mmu-44x.h	powerpc/47x: Base ppc476 support	15 years ago
mmu-book3e.h	powerpc/book3e: Adjust the page sizes list based on MMU config	15 years ago
mmu-hash32.h	powerpc: Name xpn & x fields in HW Hash PTE format	16 years ago
mmu-hash64.h	powerpc/mm: Fix vsid_scrample typo	15 years ago
mmu.h	powerpc/47x: Base ppc476 support	15 years ago
mmu_context.h	PPC: Split context init/destroy functions	15 years ago
mmzone.h	powerpc/cpumask: Convert NUMA code to new cpumask API	15 years ago
module.h	module: handle ppc64 relocating kcrctabs when CONFIG_RELOCATABLE=y	15 years ago
mpc5xxx.h	powerpc/5xxx: Add common mpc5xxx_get_bus_frequency() function	16 years ago
mpc6xx.h	…
mpc8xx.h	…
mpc52xx.h	powerpc/5200: add mpc5200_psc_ac97_gpio_reset	15 years ago
mpc52xx_psc.h	powerpc/5200: add mpc5200_psc_ac97_gpio_reset	15 years ago
mpc5121.h	powerpc/5121: shared DIU framebuffer support	15 years ago
mpc8260.h	…
mpic.h	powerpc/cpumask: Convert mpic driver to new cpumask API	15 years ago
msgbuf.h	…
msi_bitmap.h	powerpc: Split-out common MSI bitmap logic into msi_bitmap.c	17 years ago
mutex.h	powerpc: Rename LWSYNC_ON_SMP to PPC_RELEASE_BARRIER, ISYNC_ON_SMP to PPC_ACQUIRE_BARRIER	15 years ago
nvram.h	powerpc/nvram_64: Remove unused code	15 years ago
ohare.h	…
oprofile_impl.h	powerpc/oprofile: IBM CELL: add SPU event profiling support	16 years ago
pSeries_reconfig.h	powerpc/pseries: Kernel DLPAR Infrastructure	15 years ago
paca.h	powerpc/kexec: Switch to a static PACA on the way out	15 years ago
page.h	powerpc/fsl-booke: Fix CONFIG_RELOCATABLE support on FSL Book-E ppc32	15 years ago
page_32.h	dma-mapping: rename ARCH_KMALLOC_MINALIGN to ARCH_DMA_MINALIGN	15 years ago
page_64.h	powerpc: remove unused __page_aligned definition.	15 years ago
param.h	powerpc: Simplify param.h by including <asm-generic/param.h>	15 years ago
parport.h	powerpc: Correct parport interrupt parsing	15 years ago
pasemi_dma.h	…
pci-bridge.h	of/address: merge of_address_to_resource()	15 years ago
pci.h	pci-dma: add linux/pci-dma.h to linux/pci.h	15 years ago
percpu.h	powerpc: Optimise per cpu accesses on 64bit	15 years ago
perf_event.h	perf: Drop the skip argument from perf_arch_fetch_regs_caller	15 years ago
perf_event_fsl_emb.h	powerpc/perf: e500 support	15 years ago
perf_event_server.h	powerpc/perf: e500 support	15 years ago
pgalloc-32.h	powerpc/mm: Cleanup management of kmem_caches for pagetables	15 years ago
pgalloc-64.h	powerpc/mm: Track backing pages allocated by vmemmap_populate()	15 years ago
pgalloc.h	powerpc/mm: Cleanup management of kmem_caches for pagetables	15 years ago
pgtable-ppc32.h	powerpc/ppc32: Fixup pmd_page to work when ARCH_PFN_OFFSET is non-zero	15 years ago
pgtable-ppc64-4k.h	powerpc/mm: Split the various pgtable-* headers based on MMU type	16 years ago
pgtable-ppc64-64k.h	powerpc/mm: Fix misplaced #endif in pgtable-ppc64-64k.h	16 years ago
pgtable-ppc64.h	powerpc/mm: Allow more flexible layouts for hugepage pagetables	15 years ago
pgtable.h	MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself	15 years ago
phyp_dump.h	…
pmac_feature.h	powerpc: Convert feature_lock to raw_spinlock	15 years ago
pmac_low_i2c.h	i2c-powermac: Include the i2c_adapter in struct pmac_i2c_bus	15 years ago
pmac_pfunc.h	…
pmc.h	powerpc/pmc: Don't access lppaca on Book3E	16 years ago
pmi.h	…
poll.h	…
posix_types.h	…
ppc-opcode.h	powerpc: Emulate most Book I instructions in emulate_step()	15 years ago
ppc-pci.h	powerpc/eeh: Fix a bug when pci structure is null	15 years ago
ppc4xx.h	…
ppc_asm.h	powerpc: Adjust base and index registers in Altivec macros	16 years ago
processor.h	powerpc, hw_breakpoints: Implement hw_breakpoints for 64-bit server processors	15 years ago
prom.h	of/address: Clean up function declarations	15 years ago
ps3.h	ps3: Replace direct file operations by callback	16 years ago
ps3av.h	powerpc/ps3: Make ps3av_set_video_mode mode ID signed	16 years ago
ps3fb.h	powerpc: Remove duplicated #include's	16 years ago
ps3gpu.h	ps3fb: Tear down FB setup during cleanup	16 years ago
ps3stor.h	…
pte-8xx.h	powerpc/8xx: Restore _PAGE_WRITETHRU	15 years ago
pte-40x.h	powerpc/mm: Fix 40x and 8xx vs. _PAGE_SPECIAL	16 years ago
pte-44x.h	powerpc/mm: Cleanup handling of execute permission	16 years ago
pte-book3e.h	powerpc/fsl-booke: Use HW PTE format if CONFIG_PTE_64BIT	16 years ago
pte-common.h	powerpc/mm: Fix 40x and 8xx vs. _PAGE_SPECIAL	16 years ago
pte-fsl-booke.h	powerpc/fsl-booke: Use HW PTE format if CONFIG_PTE_64BIT	16 years ago
pte-hash32.h	powerpc/mm: Cleanup handling of execute permission	16 years ago
pte-hash64-4k.h	powerpc/mm: Tweak PTE bit combination definitions	16 years ago
pte-hash64-64k.h	powerpc/mm: Fix pgtable cache cleanup with CONFIG_PPC_SUBPAGE_PROT	15 years ago
pte-hash64.h	powerpc/mm: Add option for non-atomic PTE updates to ppc64	16 years ago
ptrace.h	powerpc: Fix userspace build of ptrace.h	15 years ago
qe.h	powerpc/qe&cpm: Implement static inline stubs for non-QE/CPM builds	15 years ago
qe_ic.h	powerpc/qe: Fix few build errors with CONFIG_QUICC_ENGINE=n	16 years ago
reg.h	powerpc: Inline ppc64_runlatch_off	15 years ago
reg_8xx.h	…
reg_booke.h	powerpc/book3e: Adjust the page sizes list based on MMU config	15 years ago
reg_fsl_emb.h	powerpc/perf: e500 support	15 years ago
resource.h	…
rheap.h	…
rio.h	…
rtas.h	powerpc/pseries: Rename RAS_VECTOR_OFFSET to RTAS_VECTOR_EXTERNAL_INTERRUPT and move to rtas.h	15 years ago
rtc.h	…
rwsem.h	powerpc: Make rwsem use "long" type	15 years ago
scatterlist.h	remove needless ISA_DMA_THRESHOLD	15 years ago
seccomp.h	x86-64: seccomp: fix 32/64 syscall hole	16 years ago
sections.h	Merge commit 'origin'	17 years ago
sembuf.h	…
serial.h	…
setjmp.h	…
setup.h	powerpc: derive COMMAND_LINE_SIZE from asm-generic	16 years ago
sfp-machine.h	Revert "endian: #define __BYTE_ORDER"	15 years ago
shmbuf.h	…
shmparam.h	…
sigcontext.h	…
siginfo.h	signals: demultiplexing SIGTRAP signal	17 years ago
signal.h	asm-generic: rename termios.h, signal.h and mman.h	16 years ago
smp.h	powerpc/cpumask: Dynamically allocate cpu_sibling_map and cpu_core_map cpumasks	15 years ago
smu.h	of: kill struct of_device	15 years ago
socket.h	net: Generalize socket rx gap / receive queue overflow cmsg	16 years ago
sockios.h	…
sparsemem.h	Revert "powerpc/mm: Bump SECTION_SIZE_BITS from 16MB to 256MB"	15 years ago
spinlock.h	powerpc: Rename LWSYNC_ON_SMP to PPC_RELEASE_BARRIER, ISYNC_ON_SMP to PPC_ACQUIRE_BARRIER	15 years ago
spinlock_types.h	locking: Convert raw_rwlock to arch_rwlock	15 years ago
spu.h	powerpc/cell: Bitops work on unsigned longs	16 years ago
spu_csa.h	…
spu_info.h	powerpc: Fix warnings from make headers_check	16 years ago
spu_priv1.h	…
sstep.h	…
stat.h	…
statfs.h	PowerPC: Use <asm-generic/statfs.h>	17 years ago
string.h	…
suspend.h	pm: cleanup includes	16 years ago
swab.h	powerpc: Fix warnings from make headers_check	16 years ago
swiotlb.h	powerpc: use dma_map_ops struct	16 years ago
synch.h	powerpc: Use lwsync for acquire barrier if CPU supports it	15 years ago
syscall.h	powerpc: Use correct ccr bit for syscall error status	15 years ago
syscalls.h	improve sys_newuname() for compat architectures	15 years ago
systbl.h	powerpc: Wire up fanotify_init, fanotify_mark, prlimit64 syscalls	15 years ago
system.h	net: NET_SKB_PAD should depend on L1_CACHE_BYTES	15 years ago
tce.h	…
termbits.h	tty: Add EXTPROC support for LINEMODE	15 years ago
termios.h	asm-generic: rename termios.h, signal.h and mman.h	16 years ago
thread_info.h	add descriptive comment for TIF_MEMDIE task flag declaration.	15 years ago
time.h	powerpc: Clean up obsolete code relating to decrementer and timebase	15 years ago
timex.h	…
tlb.h	powerpc/mm: Rework & cleanup page table freeing code path	16 years ago
tlbflush.h	powerpc/mm: Make low level TLB flush ops on BookE take additional args	16 years ago
topology.h	Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6	15 years ago
trace.h	powerpc: tracing: Give hypervisor call tracepoints access to arguments	15 years ago
tsi108.h	…
tsi108_irq.h	…
tsi108_pci.h	…
types.h	asm-generic: introduce asm/bitsperlong.h	16 years ago
uaccess.h	…
ucc.h	…
ucc_fast.h	…
ucc_slow.h	…
ucontext.h	…
udbg.h	powerpc: gamecube/wii: early debugging using usbgecko	15 years ago
uic.h	…
unaligned.h	…
uninorth.h	…
unistd.h	powerpc: Wire up fanotify_init, fanotify_mark, prlimit64 syscalls	15 years ago
user.h	…
vdso.h	powerpc: Move 64bit VDSO to improve context switch performance	16 years ago
vdso_datapage.h	powerpc: Rework VDSO gettimeofday to prevent time going backwards	15 years ago
vga.h	…
vio.h	…
xilinx_intc.h	…
xilinx_pci.h	powerpc/virtex: Add support for Xilinx PCI host bridge	16 years ago
xmon.h	…
xor.h	…